His accuser’s lawyer, Mitchell Garabedian, announced in an email that the suit filed on 26 June in Nantucket superior court has been voluntarily dismissed.

No reason was provided either by Garabedian or in the court filing. Garabedian said he would have no further comment. A telephone message was left at his office.

According to the court filing, the suit was dismissed “with prejudice”, which means it cannot be refiled. It says “because no adverse party has served an answer or motion for summary judgment in this matter, plaintiff is dismissing the civil action”.

An email was left on Friday requesting comment from Alan Jackson, Spacey’s attorney.

Jackson has previously said the man is lying in the hopes of winning money in a civil case against Spacey.

Garabedian’s client, the son of Boston TV anchor Heather Unruh, alleged Spacey got him drunk and sexually assaulted him at the Club Car restaurant where the then 18-year-old man worked as a busboy.

The criminal case has centered on the cellphone used by the accuser the night of the alleged groping, which the defense says it needs in order to recover text messages it says support Spacey’s innocence.

Judge Thomas Barrett of Nantucket district court has ordered the man to hand the phone over to the defense, but his attorney said they cannot find it. The judge has given them until Monday to produce the phone.

Friday’s legal development could have significance for the criminal case, said William Korman, a criminal defense lawyer specializing in sexual assault cases.

He said: “Any settlement could not be conditioned on a refusal to cooperate with the prosecution. Nevertheless, money is a great motivator for an individual not to follow through.”

David Yannetti, a Boston lawyer, suggest it was possible prosecutors specifically asked the accuser to drop it . He said: “Maybe the prosecution said it’s either about money or it’s about a crime, but it can’t be about both and you have to make a decision on where you want to go with this.”

He added the civil suit was probably filed before completion of the criminal case because the three-year statute of limitations is approaching.

The Cape and Islands district attorney Michael O’Keefe’s office declined to comment on whether prosecutors had any role in the withdrawal of the civil suit or whether a settlement has been reached.